Wrench.



G. VALBNZA.

WRENCH.

APPLICATION FILED MAY 3, 1911.

' Patented Mar.5,1912.

wi/bvmoaed COLUMBIA FLANOGRAPI'I 60., WASHZN GANDOLFO VALENZA, OFHASTINGS, COLORADO.

' WRENCH.

Specification of Letters Patent.

Patented Mar. 5, 1912.

Application filed May 3, 1911. Serial No. 624,795.

To all whom it may concern Be it known that I, GANDOLFO VALENZA, acitizen of the United States, residing at Hastings, in the county of LasAnimas and State of Colorado, have invented a new and useful WVrench, ofwhich the following is a specification.

The invention relates to improvements in wrenches.

The object of the present invention is to improve the construction ofwrenches, and to provide a simple and efficient wrench of greathstrength and durability, adapted to be cheaply constructed, and capableof easy and rapid operation.

With these and other objects in view, the invention consists in theconstruction and novel combination of parts hereinafter fully described,illustrated in the accompanying drawing, and pointed out in the claimhereto appended; it being understood that various changes in the form,proportion, size and minor details of construction, within the scope ofthe claim, may be resorted to without departing from the spirit orsacrificing any of the advantages of the invention.

In the drawing :Figure 1 is a side elevation of a wrench, constructed inaccordance with this invention. Fig. 2 isa longitudinal sectional viewof the same. Fig. 3 is a front elevation of the wrench, a portion of theshank being broken away. Fig. 4 is a transverse sectional view on theline 4-4 of Fig. 2. Fig. 5 is a transverse sectional view on the line 55of Fig. 2.

Like numerals of reference designate corresponding parts in all thefigures of the drawing.

In the accompanying drawing in which is illustrated the preferredembodiment of the invention, 1 designates a shank provided at its outerend with a fixed jaw l and equipped at its inner end with a suitablehandle 2 and slidably receiving a sleeve or casing 3, constructed ofheavy sheet metal, or other suitable material. The sleeve or casing,which is approximately U-shaped in cross section, is composed of spacedparallel sides and a connecting back portion. The parallel sides of thesleeve embrace the shank 1 and project forwardly beyond the front edgeof the same and receive a short shank or extension 4 of an adjustablejaw 5, which fits against the front edge of the shank 1. The short shankor extension 4 of the movable jaw 5 is secured by rivets 6, or othersuitable fastening devices between the sides of the sleeve or casing.The pins vor rivets 6 pierce the shank or extension 4 of the movable jawand the sides of the sleeve or casing, which projects in advance of theouter or front edge of the short shank or extension 4 to receive aspring 7 and a plate 8. The spring 7 and the plate 8 fit within and fillthe space between the projecting front edges of the sides of the sleeveor casing 8, and they are secured to the short shank or extension 4 byscrews 9, which pierce the plate 8 and the attaching portion of thespring 7. The short shank 4 extends from the outer end of the sleeve toa point approximately midway between the inner and outer ends thereof,and the inner half of the space between the projecting portions of thesides of the sleeve or casing receives a pawl or dog 10 and an eccentricor cam 11. The pawl or dog 10 is mounted at one end on a transversepivot 12, and it is provided at its other end with an inwardlyprojecting tooth 13,- which is adapted to engage a toothed portion ofthe shank 1. The shank 1 is provided at its front edge with alongitudinal series of teeth 14, shouldered at the outer end and adaptedto be engaged by the pawl or dog 10, which is maintained in engagementwith the toothed portion of the shank 1 by the spring 7. The freeportion of the spring extends longitudinally of the outer edge of thepawl or dog 10, and it bears against the same opposite the tooth 13. Theinner end 15 of the attaching plate 8 projects beyond the short shank orextension 4 and operates to brace and stifi'en the free portion of thespring 7.

The eccentric or cam 11 is mounted on a squared portion 16 of atransverse pin 17 and is arranged between the pawl or dog 10 and theshank 1, and it is provided with a tapered projecting portion 18,adapted through the rotary movement of the cam or eccentric to beengaged with the pawl or dog 10 to carry the tooth 13 thereof out ofengagement with the shank 1. When the pawl or dog 10 is disengaged fromthe shank 1, the sleeve and the adjustable jaw are adapted to slidefreely along the shank in either direction. The beveling of the teeth 14at the inner side permits the adjustable jaw to slide outwardly alongthe shank 1, when the pawl or dog 10 is in engagement with the teeth 14,the cam or eccentric being Operated when it is desired to slide the jawinwardly. The pin 17 is pro vided at one end with a suitable head 19 toenable it to be readily rotated, and its other end 20 is threaded forthe reception of a nut 21, which secures the pin in suitable openings 22in the sides of the sleeve or casing The pin 17 is provided with spacedrounded portions 23, and the openings 22 are circular to form bearingsfor the same.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

A wrench including a shank having a fixed jaw at the outer end andprovided along one side with teeth, an approximately U-shaped sleeveslidablyembracingthe sides of the shank and having its sides extendingin advance of the same, a movable jaw provided with an extension fittedagainst the shank bet-ween the extended portions of the sides of thesleeve, a flat spring fitted against the extension of the movable andextending beyond the jaw and arranged between the sides of the sleeve, aplate fitted against the spring and also arranged between the sides ofthe sleeve, fastening means piercing the plate and the spring andsecuring the same to the extension of the movable jaw, a dog pivotedbetween the sides of the sleeve below the extension of the movable jawand provided with a tooth for engaging the toothed portion of the shankand maintained in such engagement by the said spring which bears againstthe outer side of the dog, and an eccentric mounted between the sides ofthe sleeve or casing and interposed between the dog and the shank andprovided with a pivot piercing the sides of the sleeve and havingexteriorly arranged operating means for rotating the eccentric to carrythe dog out of engagement with the toothed portion of the shank.

In testimony, that I claim the foregoing as my own, I have heretoaflixed my signature in the presence of two witnesses.

GAND OLFO VALENZA.

Witnesses:

'IsAnoR CoRADINo, R. C. LEEDHAM.

Copies of this patent may be obtained for five cents each, by addressingthe. Commissioner of Patents, Washington, D. C.

